Multiple choice

Tracheids are what kind of cells?

  1. Parenchyma

  2. Sclaryncyma

  3. Collenchyma
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Tracheids are elongated cells with thick lignified secondary walls that provide both structural support and water conduction in plants. They are a type of sclerenchyma tissue, which consists of dead cells with thick walls at maturity. Parenchyma cells are thin-walled and living, while collenchyma have unevenly thickened but unlignified walls.

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